private static CGSize MeasureTextSize1(string text, CoreText.CTFont font) // this method seems to give the wrong width
// https://stackoverflow.com/questions/11245526/measuring-the-text-width
{
var dict = new Foundation.NSDictionary <Foundation.NSString, CoreText.CTFont> (new Foundation.NSString("font"), font);
return(new Foundation.NSString(text).StringSize(dict));
}
public override void AwakeFromNib()
{
base.AwakeFromNib();
CGColor LightChartBackground = ColorFromArgb(248, 248, 248);
CGColor LightChartGrid = ColorFromArgb(211, 211, 211);
CGColor LightChartAxis = ColorFromArgb(128, 128, 128);
CGColor LightChartMouse = ColorFromArgb(32, 92, 166);
CGColor LightChartLegend = ColorFromArgb(64, 145, 255);
CGColor LightChartLineDownload = ColorFromArgb(38, 22, 255);
CGColor LightChartLineUpload = ColorFromArgb(0, 90, 0);
CGColor LightChartWhite = ColorFromArgb(255, 255, 255);
m_colorBackground = LightChartBackground;
m_colorGrid = LightChartGrid;
m_colorAxis = LightChartAxis;
m_colorMouse = LightChartMouse;
m_colorDownloadGraph = LightChartLineDownload;
m_colorDownloadLine = LightChartLineDownload;
m_colorUploadGraph = LightChartLineUpload;
m_colorUploadLine = LightChartLineUpload;
//m_colorLegendText = LightChartLegend;
m_colorDownloadText = LightChartLineDownload;
m_colorUploadText = LightChartLineUpload;
m_colorWhite = LightChartWhite;
m_font = new CoreText.CTFont("Menlo", 10);
m_chart = Engine.Instance.Stats.Charts.ChartsList[m_chartIndex];
Engine.Instance.Stats.Charts.UpdateEvent += new Core.UI.Charts.UpdateHandler(Charts_UpdateEvent);
}
private static Tuple<NSMutableAttributedString,List<NewsCellView.Link>> CreateAttributedStringFromBlocks(UIFont font, UIColor primaryColor, IEnumerable<TextBlock> blocks)
{
var attributedString = new NSMutableAttributedString();
var links = new List<NewsCellView.Link>();
nint lengthCounter = 0;
int i = 0;
foreach (var b in blocks)
{
UIColor color = null;
if (b.Tapped != null)
color = LinkColor;
color = color ?? primaryColor;
var ctFont = new CoreText.CTFont(font.Name, font.PointSize);
var str = new NSAttributedString(b.Value, new CoreText.CTStringAttributes() { ForegroundColor = color.CGColor, Font = ctFont });
attributedString.Append(str);
var strLength = str.Length;
if (b.Tapped != null)
{
var weakTapped = new WeakReference<Action>(b.Tapped);
links.Add(new NewsCellView.Link { Range = new NSRange(lengthCounter, strLength), Callback = () => weakTapped.Get()?.Invoke(), Id = i++ });
}
lengthCounter += strLength;
}
return new Tuple<NSMutableAttributedString, List<NewsCellView.Link>>(attributedString, links);
}
public static CGRect MeasureText(string text, SKPaint paint)
{
var typeface = (paint.Typeface == null) ? "Helvetica" : paint.Typeface.FamilyName;
CoreText.CTFont font = new CoreText.CTFont(typeface, paint.TextSize);
var size = MeasureTextSize2(text, font);
return(new CGRect(0, -font.AscentMetric, size.Width, font.AscentMetric + font.DescentMetric));
}
private static CGSize MeasureTextSize2(string text, CoreText.CTFont font)
{
// https://docs.microsoft.com/en-us/dotnet/api/foundation.nsattributedstring?view=xamarin-ios-sdk-12
var attributedString = new Foundation.NSAttributedString(text,
new CoreText.CTStringAttributes()
{
Font = font
});
return(attributedString.Size);
}
private static Tuple <NSMutableAttributedString, List <NewsCellView.Link> > CreateAttributedStringFromBlocks(UIFont font, UIColor primaryColor, IEnumerable <TextBlock> blocks)
{
var attributedString = new NSMutableAttributedString();
var links = new List <NewsCellView.Link>();
nint lengthCounter = 0;
int i = 0;
CoreText.CTFont ctFont;
try
{
ctFont = new CoreText.CTFont(font.FamilyName, font.PointSize);
}
catch
{
ctFont = CGFont.CreateWithFontName(font.Name).ToCTFont(font.PointSize);
}
foreach (var b in blocks)
{
UIColor color = null;
if (b.Tapped != null)
{
color = LinkColor;
}
color = color ?? primaryColor;
var str = new NSAttributedString(b.Value, new CoreText.CTStringAttributes()
{
ForegroundColor = color.CGColor, Font = ctFont
});
attributedString.Append(str);
var strLength = str.Length;
if (b.Tapped != null)
{
var weakTapped = new WeakReference <Action>(b.Tapped);
links.Add(new NewsCellView.Link {
Range = new NSRange(lengthCounter, strLength), Callback = () => weakTapped.Get()?.Invoke(), Id = i++
});
}
lengthCounter += strLength;
}
return(new Tuple <NSMutableAttributedString, List <NewsCellView.Link> >(attributedString, links));
}
private static Tuple <NSMutableAttributedString, List <NewsCellView.Link> > CreateAttributedStringFromBlocks(IEnumerable <TextBlock> blocks)
{
var attributedString = new NSMutableAttributedString();
var links = new List <NewsCellView.Link>();
nint lengthCounter = 0;
int i = 0;
foreach (var b in blocks)
{
UIColor color = null;
if (b.Color != null)
{
color = b.Color;
}
else
{
if (b.Tapped != null)
{
color = LinkColor;
}
}
var font = b.Font ?? UIFont.PreferredSubheadline;
color = color ?? Theme.CurrentTheme.MainTextColor;
var ctFont = new CoreText.CTFont(font.Name, font.PointSize);
var str = new NSAttributedString(b.Value, new CoreText.CTStringAttributes {
ForegroundColor = color.CGColor, Font = ctFont
});
attributedString.Append(str);
var strLength = str.Length;
if (b.Tapped != null)
{
links.Add(new NewsCellView.Link {
Range = new NSRange(lengthCounter, strLength), Callback = b.Tapped, Id = i++
});
}
lengthCounter += strLength;
}
return(new Tuple <NSMutableAttributedString, List <NewsCellView.Link> >(attributedString, links));
}
private static Tuple <NSMutableAttributedString, List <Link> > CreateAttributedStringFromBlocks(UIFont font, UIColor primaryColor, IEnumerable <EventTextBlock> blocks)
{
var attributedString = new NSMutableAttributedString();
var links = new List <Link>();
nint lengthCounter = 0;
int i = 0;
foreach (var b in blocks)
{
var tapped = (b as EventAnchorBlock)?.Tapped;
UIColor color = null;
if (tapped != null)
{
color = LinkColor;
}
color = color ?? primaryColor;
var ctFont = new CoreText.CTFont(font.Name, font.PointSize);
var str = new NSAttributedString(b.Text, new CoreText.CTStringAttributes()
{
ForegroundColor = color.CGColor, Font = ctFont
});
attributedString.Append(str);
var strLength = str.Length;
if (tapped != null)
{
var weakTapped = new WeakReference <Action>(tapped);
links.Add(new Link {
Range = new NSRange(lengthCounter, strLength), Callback = () => weakTapped.Get()?.Invoke(), Id = i++
});
}
lengthCounter += strLength;
}
return(new Tuple <NSMutableAttributedString, List <Link> >(attributedString, links));
}
private static Tuple<NSMutableAttributedString,List<NewsCellView.Link>> CreateAttributedStringFromBlocks(IEnumerable<TextBlock> blocks)
{
var attributedString = new NSMutableAttributedString();
var links = new List<NewsCellView.Link>();
nint lengthCounter = 0;
int i = 0;
foreach (var b in blocks)
{
UIColor color = null;
if (b.Color != null)
color = b.Color;
else
{
if (b.Tapped != null)
color = LinkColor;
}
var font = b.Font ?? UIFont.PreferredSubheadline;
color = color ?? Theme.CurrentTheme.MainTextColor;
var ctFont = new CoreText.CTFont(font.Name, font.PointSize);
var str = new NSAttributedString(b.Value, new CoreText.CTStringAttributes { ForegroundColor = color.CGColor, Font = ctFont });
attributedString.Append(str);
var strLength = str.Length;
if (b.Tapped != null)
links.Add(new NewsCellView.Link { Range = new NSRange(lengthCounter, strLength), Callback = b.Tapped, Id = i++ });
lengthCounter += strLength;
}
return new Tuple<NSMutableAttributedString, List<NewsCellView.Link>>(attributedString, links);
}
